Cultivator



Sept. 28 1926.

F- A. SILAJ CULTIVA'IOR Filed March 28 1925 3 Sheets-Sheet 1 Filter-r105lNvEM-roEf.

Sept. 28, 1926. 1,601,512

F. A. SILAJ I CULTIVATOR Filed March 28 1925 3 Sheets-Sheet 2 Fla- .4.

lO c 2 1 A A y /IOA lmvsg'roa 51M Se t. 28 1926. 1,601,512

F. A. SILAJ v CULTIVATOR Filed March 28 1925 3 Sheets-Sheet V IN vEmToszhaw am 412 orngs Patented Sept. 28, 1926.

\ UNITED STATES FRANK ADAM SILAJ', OI CHICAGO, ILLINOIS CULTIVA'I'OB.

Application filed March 28, 1925. Serial No. 18,998.

This invention relates to cultivators and has among its objects theprovision of a novel adjustable support for the cultivating blades. v

Another object of the invention-resides in the novel relative mountingand arrangement of the cultivator blades.

A still further objectof my invention resides in the combined adjustablemounting of the cultivator blades which aifords not only a verticaladjustment of same but a relative lateral adjustment ,of the blades.

With these and other objects in view my invention consistsin the novelcombination, construction and arrangement of the parts and members shownin the accompanying drawings, described in the following specificationsand particularly pointed out in the appended claims.

Referring to the illustrations, Fig. 1, is a side elevation of acultivator embodying one form of my invention;

Fig. 2 is a plan view of same taken on line 22 of Fig. 1;

Fig. 3, is a section view taken on line 33 of Fig. 1, showing therelative arrangement of the cultivator blades;

Fig. 4, is a longitudinal section of the screw adjustment for thecultivator blade supporting frame; and,

Fig. 5, is a plan view of same taken on line 5-5 of Fig. 1;

Fig. 6, is a side elevation of the front or central cultivator blade;and

Fig. 7, a plan view of same taken on line 7-.7 of Fig. 6.

Fig. 8, is a side view of the adjustable strut for varying the relativeangular support of the two blades of the central cultivator.

Referring now to the illustrations, 10 indicates a centrallongitudinally extending beam which is preferably of steel or cast ironand of a general U cross section.

The front end of the beam 10 is pivotally mounted between a pair of bars11 and supported at their lower end on the wheel 12 and terminating attheir upper end in the handle 11*. An arcuate traction bar 13 is.

rigidly secured to the beam 10 and the free end is provided with a chain14 or any other suitable connection to which a tractor or the like maybe attached 'forpropelling the cultivator. i

The bars 11 carry a bolt 15 which is adapted to support the bars 11 inany one of the desirable angular positions which are afforded by theangular positioning of same about the pivotal pin 11 and the insertionof the bolt 15 in either one of the holes 13* n the arcuate bar 13.Angularly disposmg the bars 11 will obviously raise or lower the frontend of the cultivator.

The front or central cultivator blade suport 16 is mounted for verticaladjustment n the integral boss 10 of the beam 10 and isvheld in rigidposition by a pair of upper and lower collars 17 and 18 havingrespectively screws 17 and 18 for rigidly holding same to the support16.

Supported on the support 16 between the boss 10 and the collar 18 is abracket 19 terminating with laterally disposed pivotal ears 19 for thelinks 20.

The links 20 terminate in ends 20 which are halved with the ends of thecultivator blade supporting frames 21, a suitable screw 22 forming thepivotal pm for said connection.

The frames 21 are bent intermediate their ends to throw their rear endsfurther outwardly from the center of the beam 10 and thus affording adisalignm'ent of the two sets of blade supports 23 and 24.

The cultivator blades 23 and 24 are rigidly mounted for verticaladjustment in the U-shaped clevis 25 which has slidable adjustment onthe frames 21 and the upper and lower ends of which are provided withsquare openings 25 through which the supports 23 and 24 extend.Tightening of the screws 27 which are threaded into the clevises 25 willrigidly retain the supports 23 and 24 against the frames 21-.

The rear ends of the frames 21 are pivotally connected to the links 28which are joined together for pivotal movement about the pin 29supported in the beam 10.

For the purpose of moving the frames 21 inwardly and outwardly of thebeam 10,

about their pivotally mounted links 20 and 28, I provide a mechanismwhich comprises a screw 30 which is supported for rotary movement in theintegral beam cross bearings 10 and 10. The screw 30 is rotated by thehand crank 31 and carries a block 32 threaded thereonand arranged forlon itudinal movement thereof by turning oft e crank 31. The block 32 isformed with a pair of oppositely disposed U-shaped-integral ears 32between which are pivotally mounted links 33, the outer ends of whichtion toward their lower edge 35 have ivotal connection approximatelyin-' terms 'ate the link'28. a

his now readily apparent that the rotation of the crank 31 will cause alon itudinal movement thereof of the bloc 32 which will im art movementto the link 28 for moving t e frames inwardly or outwardl of .the beam10, as shown by the dotte lines in Fig. .2.

The supports 23 and 24 carry rigidly mounted to their lower endsthetriangular cultivator blades 34. The blades of the sup- (iorts 23, asshown in Fig. 3, are op ositely isposed, likewise the blades of t esupports 24, for turning the soil toward each other.

The front or central cultivator blades 35 are substantially of" a slightarcuate formawhich is cut at an angle upwardly to the rear. The

front edge is curved to conform to the supsupport 16. The ends 38' port16. The blades carry a strag 36 at the upper front end which is roundsat its free end for projection into the ears 37 of the clevis 37 whichis bolted to the support 16. The lower front portions are supported onthe bent rounded ends 38 of thestraps 38 rigidly mounted on the lowerend of the extend through the elongated slots 35 in the blades.

Bolted to the lower end of the support 16 with bolts 39, is a shoe 40 ofspecial alloy I steel to withstand long wear.

The blades 35 are cross connected together with an adjustable strut 41comprising a pair of bars 41 and 41 overlapped at "the inner ends andprovided with a plurality of holes 41 and a bolt 42 for adjustablelateral arrangement.

The outersends of the strut 41 are hooked into the eye-bolts 43 mountedin the blades 35.

A flat bar 44 is bolted to the under side of the beam 10 and extendsvertically to a central point between the strut 41 and at such point isprovided with a clip bar 46 for embracing and by means of the bolt 42retaining the strut 41.

Below the strut 41, the bar 44 is twisted and then bent at a right angleand extended toward the curved pointed hooked end 44 which extends intothe shoe 40 and within the depressed portion 16 of the support 16; thebolts 39 securely retaining same.

It will now be readily apparent that by the adjustment of the strut 41,the blades 35 may be regulated to take a wider or narrower furrow.

The handle bars 45 provide means for manually steering of thecultivator.

I claim:

1. In a cultivator, the combination of a central beam extendingcentrallyand longitudinally of said cultivator, a pivotal support for the frontend of said beam, a wheel end of said cultivator support and asupporting the lower end of said support, an arcuate traction bar fixedat one end to said beam, means for connecting the upper end of saidpivotal support to said traction bar at variable angular positionswhereby the front end of said beam can be carried at variable distancesabove the ground, a vertically ed on the longitudinal axis of said beam,a central cultivator mounted on said cultivator sup ort, said centralcultivator comprising a p ow shoe fixed to the lower end of saidcultivatorsupport and a pair of oppositely disposed blades extendingupwardly and rearwardly from both sides of said shoe and means forsupporting said. blades adapted for adjustably varying the distance ofsaid blades from the longitudinal axis of the cultivator; a pair of sideframes pivotally mounted, one on each side of said beam, a front linkpivotally connecting the front end of each of said frames to said beam,a rear link pivotall connecting the rear end of each of said ames tosaid beam, a plurality of side cultivator blade support sockets mountedon each frame and adjustable longitudinally thereon, said frames beingbent to disalign said sockets longitudinally of the cultivator,cultivator blade supports mounted in said sockets and adapted forvertical adjustment therein, a cultivator blade secured to each of saidside cultivator blade supports, and mechanism for Simultaneouslyadjusting said side cultivator blades transversely to said beam.

2. In a cultivator, the combination of a central beam extendingcentrally and longitudinally of said cultivator, a pivotal support forthe front end of said beam, a wheel supporting the lower end of saidsupport, an'arcuate traction bar fixed at one end to said beam, meansfor connecting the upper end of said pivotal support to said tractionbar at variable angular positions whereby the front end of said beam canbe carried at variable distances above the ground, a.

vertically adjustable cultivator support mounted on the longitudinalaxis of said beam, 2. central cultivator mounted on said cultivatorsupport, said central cultivator comprising a plow shoe fixed to thelower pair of oppositely disposed blades extending upwardly andrearwardly from both sides of said shoe, and means for supporting saidblades adapted for ad'ustably varying the distance of said blades axisof the cultivator, a pair of side frames pivotally mounted, one on eachside of said beam, a front link pivotally connecting the front end ofeach of said frames to said beam, a rear link pivotally connecting the 7rear end of each of said frames to said beam, a plurality of sidecultivator blade support sockets mounted on each frame and 341111817adjustable cultivator support mountom the longitudinal ablelongitudinally thereon, said frames beanism comprising a screw, a handcrank for l ing'bent to disalign said sockets lon itudisaid screw, apair of bearings on said beam nally of the cultivator, cultivator bla esupfor said screw, a block mounted for moveports mounted in said socketsand adapted ment on said screw, and a pair of links piv- 5 for verticaladjustment therein, a cultivator otally connecting said block with saidrear blade secured to each ofsaid side cultivator links connected to therear end of said 15 blade supports, and mechanism for simulframes.taneously adjusting said side cultivator In witness whereof I affix msignature. blades transversely to said beam, said mech- FRANK ADALdSILAJ.

